Adopt new Solidity features interfaceId, try/catch, keccak constants (#2487)

* Clean code

-  using type().interfaceId to improve readeability of ERC165 registration
- hardcoding some keccak256 that are otherwise computed at construction.

* hardcode keccak256 result

* Improve code readeability using try/catch

* Remove hardcoded hash 

tests show that solc 0.8.0 does the optimization as expected

* Use try/catch to improve readability

* ERC165Checker: Do not revert when returndata is empty + new test

* Address PR comments

* improve testing of ERC721Receiver errors

* put back comment about invalid interface id

* coverage does not support 0.8.1. Reverting back to 0.8.0

* bubble all data with length > 0 if onERC721Receive fails.

* Fix test: revert without message trigger is bubble with the default message

* using enum object to improve readability

contracts/access/TimelockController.sol

@@ -20,7 +20,6 @@ import "./AccessControl.sol";
  * _Available since v3.3._
  */
 contract TimelockController is AccessControl {
-
     bytes32 public constant TIMELOCK_ADMIN_ROLE = keccak256("TIMELOCK_ADMIN_ROLE");
     bytes32 public constant PROPOSER_ROLE = keccak256("PROPOSER_ROLE");
     bytes32 public constant EXECUTOR_ROLE = keccak256("EXECUTOR_ROLE");